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Finding the Fourth Proportional to 15,847.23, 21,865.71 and 9,472.89

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Solution

The fourth proportional to 15,847.23, 21,865.71 and 9,472.89 is: 13,070.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847.23 : 21,865.71 = 9,472.89 : x
  2. Step 2: Convert to fraction form
    15,847.23/21,865.71 = 9,472.89/x
  3. Step 3: Cross multiply
    15,847.23x = 21,865.71 × 9,472.89
  4. Step 4: Simplify right side
    15,847.23x = 207,131,465.60
  5. Step 5: Solve for x
    x = 207,131,465.60/15,847.23
  6. Step 6: Final answer
    x = 13,070.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.